Which of the following is not associated with guttation ?

Options

A. Minerals
B. `H_(2)O`
C. Organic Acid
D. Proteins

Answer

To determine which of the following is not associated with guttation, we need to understand the process of guttation and the components involved in it.

### Step-by-Step Solution:

1. **Understanding Guttation**:
Guttation is the process by which water is exuded from the leaves of plants in the form of droplets. This typically occurs at night or in humid conditions when transpiration is low.

2. **Water Absorption**:
Plants absorb water from the soil through their roots. This water contains dissolved minerals and nutrients, which are transported through the xylem to various parts of the plant.

3. **Role of Stomata**:
While transpiration (water loss through stomata) usually occurs during the day, guttation is a different process where excess water is pushed out through specialized structures called hydathodes, mainly located at the leaf margins.

4. **Composition of Guttation Fluid**:
The fluid that is exuded during guttation is not pure water; it contains dissolved substances such as minerals and organic acids. However, it typically does not contain proteins.

5. **Analyzing the Options**:
Given the options (minerals, water, organic acids, proteins), we can identify that:
- Minerals and organic acids are indeed associated with guttation.
- Water is a fundamental component of the process.
- Proteins, however, are not typically found in the guttation fluid.

6. **Conclusion**:
Therefore, the option that is not associated with guttation is **proteins**.

### Final Answer:
**Proteins** are not associated with guttation.

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